Means for cleansing or filtering lubricating oils



M y 1931. F. R. SIMMS ET AL 1,806,001

MEANS FOR CLEANSING OR FILTERING LUBRICATING OILS Filed Dec. 28, 1927Inventon5 rewuxlg Patented May 19, 1931 UNITED STA TES FREDERICK BIKES,0] LONmfi', AND SEEM W TOY, 0] m WSW, LONDON, ENGLAND mums FOB CLEANSINGOR FILTERI IING LUBRICATING OILS Application filed December 28, 1927,lerial No. 243,152, and in Great Britain Aunlt 25, 19 87.

Our invention relates to improved means for cleansing orfilteringlubricating oils, such as are used in machinery and engines, that is tosay, for separating therefrom, by the known method of magneticattraction, any parts or suspended particles of iron or steel which areworn or broken away from moving parts of the machinery being lubricated,and particularly such particles as are of so minute a nature that theycannot be removed by an ordinary filter.

According to the invention, our improved device comprises a single barmagnet, or series of bar magnets, which may be of any shape incross-section, or one or more .horseshoe magnets, the said magnet ormagnets being fitted with a plug or adaptor designed to be applied tosuch portions of the machinery as contain the lubricant, or throughwhich it passes, such, for example, as a gear-box, or enginecrank-chamber, the outer end of said adaptor being provided with anaperture through which the magnetic devlce may be removed withoutdisconnecting the adaptor from the oil receptacle and with a removableclosure for said aperture.

The device may be inserted in position either in place of the drain-plugor filler, or other plu or it may be introduced by means of the a aptorinto any other position, irrespective of the aforesaid plugs.

In cases where the device is inserted in place of a drain-plug or fillerplug, or the like, it is sometimes necessary to prov de means wherebythe opening through whlch the filter device is inserted shall be closedwhen the said filter device is removed, and to this end, we attach tothe said opening an automatic valve. For example, a tubular fitting isscrewed into the aforesaid hole or opening, the end of the said fittingbeing made with a valve-seat adjacent to the oil container. Inconjunction with this valveseat, we provide a ball-valve, which isnormally retained on the seat by spring action. The magnet is introducedinto the open end of the tubular fitting, the diameter of which,adjacent to the oil container, is larger than that of the magnet. sothat there is an annular space existing between the magnet and theinterior surface of the fitting. Furthermore, the magnet is of a lengthsuch that, when pushed into the fitting by a screw or otherwise. itsinner end projects into the 911 container, and so lifts the ball-valvefrom its seat, thereby placing the interior of the 011 container incommunication with the annular space between the magnet and the tubularfitting so that the oil contained in the said annu ar space or adjacentthereto and any particles therein are subjected to the attraction of thema net. When the magnet with its deposited particles is removed from thetubular fitting, the valve automaticallv closes under the action of thespring, so that no discharge of oil can take place.

To enable the invention to be fully understood we will describe it byreference to the accompanying drawings, in which Figures 1 and 2 are,respectively, an elevation and a plan View of the form of the improveddevice involving the use of a plurality of bar magnets and Figure 3 is asectional elevation thereof.

Figures 4 and 5 are, respectively, a sectional elevation and a plan viewof a form of the improved device involving the use of a singlewithdrawable bar magnet and aballvalve for sealing the opening in thefittin in which the magnet is located when the saic magnet is withdrawntherefrom.

Referring to Figs. 1 to 3, (1 indicates the bar magnet or magnets forattracting the ferrous particles in the lubricating oil to be cleansed,four of such magnets being shown,

and b, is the plug or adaptor provided with a threaded portion to enableit to be screwed into an opening in the bottom of a chamber or containercontaining the said lubricating oil, the said plug being formed with asocket extension, f, in which the magnets are shown supported in spacedrelation with their upper ends projecting above the upper end of theadaptor, so as to extend into the oil and accumulate the ferrousparticles attracted to the exposed upper ends of the magnets. The bottomortion of the extension, f, is provided with an aperture, or apertures,through which the magnets can be removed from the plug and cleansed andreplaced therein, by

removing a closure or plate, It, secured by a screw, z a packing,j,be1ng provided between the said plate and the bottom of the extensionFi ures 4 and 5 show a construction allowing t e withdrawal of ahar-magnet a without removing the containlng pin or adaptor b from theoil chamber, and w ich plug 1s provided at its upper end with a cavityor cup surrounding the upper end of the magnet, and the socket portion fis open at the bottom and a plug 2' with an extension is screwed thereinas shown for supporting the magnet and made oil tight with a packingwasher 7' Z is the ball-valve for closing the upper end of the socket fby engagement with the seating an when the plug 2' and the magnet a arewithdrawn, the said ball being normally maintained in contact with theupper end of the magnet by the volute spring a. In this arrangement, theinner diameter of the upper portion of the socket F, is slightly largerthan that of the magnet, providing the annular space '0 into whichferrous particles will pass into contact with the magnet, thuspermitting the magnet to be withdrawn while the collected ferrousparticle-s will adhere.

Claims:

1. A device for separating para-magnetic particles from lubricating oil,comprising an adaptor provided with means for securing it to an oilreceptacle in communication with the ordinary drain aperture therein,and a magnetic device removably supported in said adaptor and having itsinner end projecting beyond the end of the adaptor into the oil withinsaid receptacle, the outer end of said adaptor being provided with anaperture through which the magnetic device may be removed withoutdisconnecting the adaptor from the oil receptacle, and a removableclosure for said aperture.

2. A device for separating para-magnetic particles from the lubricatingoil of a machine, comprising at least one magnet operably connected tothe crank chamber of the machine, so as to extend into the same andattract any para-magnetic particles contained in the oil circulatingthrough the said chamber, means whereby the magnet is ar ranged within apassage through a plug or adaptor and a valve to close the said passagewhen the magnet is removed.

3. A device for separating para-magnetic particles from lubricating oil,comprising an adaptor provided with means for securing it to an oilreceptacle in communication with the ordinary drain aperture therein,and a magnetic device removably supported in said adaptor and having itsinner end projecting beyond the end of the adaptor into the oil withinsaid receptacle, the outer end of said adaptor being provided with anaperture through which the magnetic device may be from the oilreceptacle, said adaptor being provided with a valve seat surroundingthe magnetic device, a valve for engaging said seat'disposed inalignment with said magnetic device and adapted to be moved to openposition by the insertion of the magnetic device within the adaptor, andyielding means for seating said valve when the magnetic device isremoved.

4. A device for separatin para-magnetic particles from lubricating oicomprising an adaptor provided with means for securing it to an oilreceptacle in communication with an aperture therein, said adaptor beingopen at its outer end, a removable closure for the outer end of saidadaptor, a plurality of bar magnets held in said ada tor in laterallyseparated position and havlng their outer ends supported by saidclosure, the inner ends of said magnets projecting into the circulatingoil in said receptacle.

FREDERICK RICHARD SIMMS. BERTRAM CHARLES JOY.

removed without disconnecting the adaptor

